Essential Lung Sounds Bronchial lung sounds are hollow, tubular sounds that are lower pitched. Listen The patient was seated during auscultation. Visualize LessonsNormal VesicularDiminished Vesicular✓BronchialWheezesRhonchi - low-pitched Wheezes 316Fine Crackles (Rales)Coarse Crackles (Rales)BronchovesicularStridorPleural Friction RubSign-in to enable progress reports and certificates.